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Uniform Data Set version 4
UDSv4 - Template

United States
Reference ID
USDv4
Producer(s)
National Alzheimer’s Coordinating Center (NACC) and the NIA-funded ADRC network
Collections
Clinical Trial
Metadata
DDI/XML JSON
Created on
Jul 02, 2026
Last modified
Jul 07, 2026
Page views
13900

5a. Rigidity - neck (rigdneck)

Data file: UDSv4TemplateForXMLD_2026-04-14_0731.REDCap.xml

Overview

Valid: 54
Range: -
Format:

Questions and instructions

Question pretext
[pdnormal] <> '1'
Categories
Value Category Cases
0 Absent 1
1.9%
1 Slight or detectable only when activated by mirror or other movements 4
7.4%
2 Mild to moderate 16
29.6%
3 Marked, but full range of motion easily achieved 11
20.4%
4 Severe; range of motion achieved with difficulty 21
38.9%
8 Untestable 1
1.9%
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
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